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run code in 200+ php & hhvm versions
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<?php $var = "laruence"; $var_dup = $var; debug_zval_dump($var); $var_ref = &$var;
based on JoIAT
Output for 7.0.0 - 7.1.0, 7.1.7 - 7.2.0
string(8) "laruence" refcount(1)
Output for 7.1.5 - 7.1.6
string(8) "laruence" refcount(4)
Output for 5.5.0 - 5.6.28
string(8) "laruence" refcount(3)